Abstract
The growth and nutrient assimilation was evaluated in CaCl2- and CaSO4-supplemented cowpea plants subjected to salt stress (75 mM NaCl). The salinity significantly reduced the cowpea vegetative growth. The addition of CaCl2 in the growth medium did not significantly affect plant growth, while for the CaSO4, the beneficial effects of Ca2+ were moderate. Salinity increased the Na+, K+, Cl-, N and P content in the plants, however it decreased the content of Ca2+ and Mg2+. Increases in Ca2+ concentration in the nutrient solution caused decreases in the Na+ and Mg2+ contents and increases in Ca2+, K+, P, and Cl- contents. The supplemental Ca2+ may alleviate the Na+ toxicity and may improve nutritional and ionic balance in cowpea, but it cannot overcome the osmotic effects associated with the increased total salt concentration.
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Claims 9
Claim · model-written summary
Salinity significantly reduced cowpea vegetative growth.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- salinitye0
- Outcome
- vegetative growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The salinity significantly reduced the cowpea vegetative growth”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Calcium chloride addition did not significantly affect plant growth.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- CaCl2e0
- Outcome
- plant growthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of CaCl2 in the growth medium did not significantly affect plant growth”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Calcium sulfate had a moderate beneficial effect on growth.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- CaSO4e0
- Outcome
- beneficial effectse0
- Qualifier
- moderatee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for the CaSO4, the beneficial effects of Ca2+ were moderate”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Salinity increased plant sodium, potassium and chloride contents.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Salinitye0
- Outcome
- Na+, K+, Cl-e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased the Na+, K+, Cl-, N and P content in the plants”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Salinity increased plant nitrogen and phosphorus contents.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Salinitye0
- Outcome
- N and P contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased the Na+, K+, Cl-, N and P content in the plants”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Salinity decreased plant calcium and magnesium contents.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Salinityt1
- Outcome
- content of Ca2+ and Mg2+e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it decreased the content of Ca2+ and Mg2+”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
t1“Salinity increased the Na+, K+, Cl-, N and P content in the plants”
Claim · model-written summary
Higher calcium concentration decreased plant sodium and magnesium contents.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Increases in Ca2+ concentration in the nutrient solutione0
- Outcome
- Na+ and Mg2+ contentse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in Ca2+ concentration in the nutrient solution caused decreases in the Na+ and Mg2+ contents”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Higher calcium concentration increased plant calcium, potassium and phosphorus contents.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Increases in Ca2+ concentration in the nutrient solutione0
- Outcome
- Ca2+, K+, P, and Cl- contentse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in Ca2+ concentration in the nutrient solution caused decreases in the Na+ and Mg2+ contents and increases in Ca2+, K+, P, and Cl- contents”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
Claim · model-written summary
Supplemental calcium may alleviate sodium toxicity and improve nutrient balance, but cannot overcome osmotic effects of total salt.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- supplemental Ca2+e0
- Outcome
- Na+ toxicitye0
- Qualifier
- cannot overcome the osmotic effects associated with the increased total salt concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The supplemental Ca2+ may alleviate the Na+ toxicity and may improve nutritional and ionic balance in cowpea, but it cannot overcome the osmotic effects associated with the increased total salt concentration”
t0“Supplemental Ca2+ does not improve growth but it affects nutrient uptake in NaCl-stressed cowpea plants”
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See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.